Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 390.27.0092 found under Retainer Electrical Switch by Jenoptik Advanced Systems Llc. The National Stock Number assigned to this part is 5930015956647, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 390.27.0092.